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文章摘要

宁夏某工业园周边农田土壤重金属分布特征及风险评估

Distribution Characteristics and Risk Assessment of Heavy Metals in Farmland Soil around An Industrial Park in Ningxia

DOI：

中文关键词: 重金属农田土壤生态风险评价工业园区宁夏平原黄灌区

英文关键词: Heavy metal Farmland soil Ecological risk assessment Industrial park The Yellow River irrigation area in Ningxia Plain

基金项目:国家自然科学基金资助项目（42207029）；宁夏自然科学基金资助项目（2022AAC03036）；宁夏重点研发计划基金资助项目（2021BEB04058）

作者	单位
童晓玉	宁夏大学农学院
郭静静	宁夏大学农学院
高瑞丽	宁夏大学农学院
陈林	宁夏大学生态环境学院
薛斌	宁夏大学生态环境学院
高锋	宁夏大学生态环境学院

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中文摘要:

采集宁夏黄灌区某工业园区周边农田土壤样品，测定样品中8种重金属全量和TCLP提取态含量，并采用土壤综合质量指数法对土壤重金属污染现状进行评价。结果表明，土壤样品中Mn、As、Pb、Cd、Cu、Ni、Zn和Hg的平均值分别为6673mg/kg、1231mg/kg、2456mg/kg、0091mg/kg、2432mg/kg、2972mg/kg、7496mg/kg和0050mg/kg，与宁夏土壤元素背景值相比均存在一定程度的积累，且距离工业园区越近，积累越严重，其中Hg的空间分布变异程度较高；8种重金属全量和TCLP提取态含量均分别低于农用地土壤污染风险筛选值和TCLP国际标准限值；研究区域土壤目前尚较清洁，农作物受到重金属污染风险较低。

英文摘要:

Soil samples were collected from the farmland around an industrial park in the Yellow River irrigation area of Ningxia Plain， the total content and the content extracted by TCLP of 8 heavy metals were determined. The current status of heavy metal pollution in soil was evaluated by comprehensive soil quality index. The results indicated that the average content of Mn，As，Pb，Cd，Cu，Ni，Zn and Hg in soil samples was 6673 mg/kg， 12.31 mg/kg， 24.56 mg/kg， 0.091 mg/kg， 24.32 mg/kg， 29.72 mg/kg， 74.96 mg/kg and 0.050 mg/kg， respectively. Compared with the background values of elements in the soil of Ningxia， there was a certain degree of accumulation， and the closer to the industrial park， the greater the accumulation. The spatial distribution of Hg varied greatly. The total content and the 〖JP2〗content extracted by TCLP of the 8 heavy〖JP〗 metals were both lower than the risk screening values for soil contamination of agricultural land and the international standard with TCLP. At present， the soil in the study area was relatively clean， and the pollution risk of heavy metals to crops was low.

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